How to quickly render 2D/3D Mathematical curve animations without the shadow details
You can use Eevee rendering (Blender 2.8) with the following base setting. Eevee is physically less accurate than Cycles but much faster.



The setting is very basic:




Material: just use colors as you don't want shadows/shaders (bottom of the image above)
Wireframe: use a wireframe modifier (on the right in the image)